There is the interesting white-necked guineafowl, Agelastes (which is found on the Gold Coast and elsewhere west of the lower Niger); there is one peculiar species of eagle owl (Bubo lettii) and a very handsome sparrow-hawk (Accipiter bitttikoferi); a few sun-birds, warblers and shrikes are peculiar to the region.
Chapman, Color Key to North American Birds (New York, 1903); Handbook of Birds of Eastern North America (ibid, 1895) and The Warblers of North America (ibid, 1907), with notable coloured illustrations by L.
Like Gloger, Sundevall in his ideal system separated the true passerines from all other birds, calling them Volucres; but he took a step further, for he assigned to them the highest rank, wherein nearly every recent authority agrees with him; out of them, however, he chose the thrushes and warblers to stand first as his ideal " Centrum " - a selection which, though in the opinion of the present writer erroneous, is still largely followed.
The name mocking-bird, or more frequently mock-nightingale, is in England occasionally given to some of the warblers (q.v.), especially the blackcap (Sylvia atricapilla), and the sedge-bird (Acrocephalus schoenobaenus).
The robin, song sparrow, chickadee, thrushes, warblers, vireos, orioles, wrens, blue-bird, cat-bird and phoebe are favourite song birds.
Robins, bluebirds, warblers, chickadees, finches, vireos, wrens, yellow-headed blackbirds, nutcrackers, nuthatches, meadow-larks, sparrows, woodpeckers, swifts, kingbirds and several other species of small birds are found in the park, but the number of each is not great.